I don't disagree with the authors point, yet I would contend that it's practically impossible for education to happen without indoctrination. Philosophy itself

I don't disagree with the authors point, yet I would contend that it's practically impossible for education to happen without indoctrination. Philosophy itself has a heck of a time proving anything is true in the face of radical doubt besides maybe some elementary notions such as that thought exists. Never mind proving anything as complex as the shape of the earth. Trying to prove to a radically sceptical flat earther that the earth is a specific shape is folly, you will never successfully demonstrate such proof against a sufficiently prepared opponent. You CAN demonstrate that it cannot be proven that the earth is flat, but that's about it. One of the most absurd thing about flat eartherdom is how "round earthers" don't seem to truly understand the limits of their own knowledge but are eager to get into arguments with other people, whereas flat earthers range from those who are equally inept to savvy people playing a prank on those who wrongly consider themselves knowledgeable. I see the entire phenomena to be a great public lesson on philosophy and science, as well as the futility of imposing your views on other people.